Hi LC - That instruction is only SSE2, and can be found in emmintrin.h. Brian On Thu, Aug 20, 2009 at 10:32 AM, Lingchuan (LC) Meng<lingchuanmeng@xxxxxxxxx> wrote: > Another possible reason is that the CPU I'm using ( AMD Phenom II ) > does not fully support sse4.1 which consists of many more integer > instructions. Reference can be found at wiki's SSE4 entry : > http://en.wikipedia.org/wiki/SSE4 > > " > AMD currently only supports 4 instructions from the SSE4 instruction > set, but have also added two new SSE instructions that it named SSE4a. > These instructions are not found in Intel's processors supporting > SSE4.1 and alternatively AMD processors aren't supporting Intel's > SSE4.1. Support was added for SSE4a for unaligned SSE load-operation > instructions (which formerly required 16-byte alignment). > " > > > > Best regards, > > LC > > > > On Thu, Aug 20, 2009 at 1:05 PM, Lingchuan (LC) > Meng<lingchuanmeng@xxxxxxxxx> wrote: >> Hi Brian, >> >> Thank you! Here's the header files included: >> >> #include <xmmintrin.h> >> #include <emmintrin.h> >> #include <smmintrin.h> >> >> The compilation is okay, no error message. It's during execution that >> I see the "Illegal instruction" error message. >> >> Best regards, >> >> LC >> >> >> >> On Thu, Aug 20, 2009 at 1:01 PM, Brian Budge<brian.budge@xxxxxxxxx> wrote: >>> Hi LC - >>> >>> Do you have the correct header files included? You need the >>> *mmintrin.h family of headers for these functions to work. >>> >>> Brian >>> >>> On Thu, Aug 20, 2009 at 9:09 AM, Lingchuan (LC) >>> Meng<lingchuanmeng@xxxxxxxxx> wrote: >>>> Hi all, >>>> >>>> When vectorizing some of my integer code, I had this "Illegal >>>> instruction" problem with SIMD intrinsics in GCC. I believe the error >>>> is triggered by the instruction: >>>> >>>> _mm_store_si128((__m128i *)c, v2); >>>> >>>> where C and v2 are defined as: >>>> >>>> int c[4] __attribute__((aligned(16))) = {0, 0, 0, 0}; >>>> __m128i v2; >>>> >>>> And the CFLAGS is >>>> >>>> -I/usr/local/papi-3.6.1/include -L/usr/local/papi-3.6.1/lib/ -lpapi >>>> -lm -O2 -msse4.1 -fno-inline-small-functions >>>> >>>> I searched around when starting with SIMD intrinsics, and didn't find >>>> a complete instruction set for GCC. So I end up using something >>>> similar from MSDN. >>>> >>>> What's the legal intrinsic function in GCC to store a __m128i vector >>>> back to an integer array? >>>> >>>> Thanks, >>>> >>>> LC >>>> >>> >> >
